61038506690 has 64 divisors (see below), whose sum is σ = 131590656000. Its totient is φ = 20361837888.

The previous prime is 61038506689. The next prime is 61038506707. The reversal of 61038506690 is 9660583016.

61038506690 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-3 number, since 3×61038506690³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113570 + ... + 367389.

It is an arithmetic number, because the mean of its divisors is an integer number (2056104000).

Almost surely, 2^61038506690 is an apocalyptic number.

61038506690 is an abundant number, since it is smaller than the sum of its proper divisors (70552149310).

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

61038506690 is a wasteful number, since it uses less digits than its factorization.

61038506690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481024 (or 481010 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 61038506690 in words is "sixty-one billion, thirty-eight million, five hundred six thousand, six hundred ninety".