749036061040 has 80 divisors (see below), whose sum is σ = 1782612298368. Its totient is φ = 292547582208.

The previous prime is 749036061031. The next prime is 749036061113. The reversal of 749036061040 is 40160630947.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×749036061040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 749036060984 and 749036061002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10570207 + ... + 10640833.

Almost surely, 2^749036061040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749036061040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891306149184).

749036061040 is an abundant number, since it is smaller than the sum of its proper divisors (1033576237328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749036061040 is a wasteful number, since it uses less digits than its factorization.

749036061040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73766 (or 73760 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

Adding to 749036061040 its reverse (40160630947), we get a palindrome (789196691987).

The spelling of 749036061040 in words is "seven hundred forty-nine billion, thirty-six million, sixty-one thousand, forty".