61155161501 has 8 divisors (see below), whose sum is σ = 69895588224. Its totient is φ = 52415728560.

The previous prime is 61155161411. The next prime is 61155161519. The reversal of 61155161501 is 10516155116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61155161501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61155161201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111545 + ... + 367086.

It is an arithmetic number, because the mean of its divisors is an integer number (8736948528).

Almost surely, 2^61155161501 is an apocalyptic number.

It is an amenable number.

61155161501 is a deficient number, since it is larger than the sum of its proper divisors (8740426723).

61155161501 is a wasteful number, since it uses less digits than its factorization.

61155161501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496891.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 61155161501 in words is "sixty-one billion, one hundred fifty-five million, one hundred sixty-one thousand, five hundred one".