61463493744 has 80 divisors (see below), whose sum is σ = 168855397920. Its totient is φ = 19198402560.

The previous prime is 61463493739. The next prime is 61463493821. The reversal of 61463493744 is 44739436416.

61463493744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61463493744² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22404 + ... + 351324.

It is an arithmetic number, because the mean of its divisors is an integer number (2110692474).

Almost surely, 2^61463493744 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 61463493744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84427698960).

61463493744 is an abundant number, since it is smaller than the sum of its proper divisors (107391904176).

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

61463493744 is a wasteful number, since it uses less digits than its factorization.

61463493744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329178 (or 329172 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 51.

The spelling of 61463493744 in words is "sixty-one billion, four hundred sixty-three million, four hundred ninety-three thousand, seven hundred forty-four".