749021700078 has 48 divisors (see below), whose sum is σ = 1633473537696. Its totient is φ = 248044680000.

The previous prime is 749021700061. The next prime is 749021700103. The reversal of 749021700078 is 870007120947.

It is a happy number.

749021700078 is a `hidden beast` number, since 7 + 490 + 21 + 70 + 0 + 0 + 78 = 666.

It is a super-2 number, since 2×749021700078² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22175703 + ... + 22209453.

It is an arithmetic number, because the mean of its divisors is an integer number (34030698702).

Almost surely, 2^749021700078 is an apocalyptic number.

749021700078 is an abundant number, since it is smaller than the sum of its proper divisors (884451837618).

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

749021700078 is a wasteful number, since it uses less digits than its factorization.

749021700078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41769 (or 41766 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The spelling of 749021700078 in words is "seven hundred forty-nine billion, twenty-one million, seven hundred thousand, seventy-eight".