61011157100 has 36 divisors (see below), whose sum is σ = 132552193200. Its totient is φ = 24375341760.

The previous prime is 61011157057. The next prime is 61011157111. The reversal of 61011157100 is 175111016.

It is a super-2 number, since 2×61011157100² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279695 + ... + 447494.

Almost surely, 2^61011157100 is an apocalyptic number.

It is an amenable number.

61011157100 is an abundant number, since it is smaller than the sum of its proper divisors (71541036100).

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

61011157100 is a wasteful number, since it uses less digits than its factorization.

61011157100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728042 (or 728035 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 23.

Adding to 61011157100 its reverse (175111016), we get a palindrome (61186268116).

The spelling of 61011157100 in words is "sixty-one billion, eleven million, one hundred fifty-seven thousand, one hundred".