61651106001501 has 4 divisors (see below), whose sum is σ = 82201474668672. Its totient is φ = 41100737334332.

The previous prime is 61651106001491. The next prime is 61651106001677. The reversal of 61651106001501 is 10510060115616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61651106001501 - 2⁶ = 61651106001437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651106002501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10275184333581 + ... + 10275184333586.

It is an arithmetic number, because the mean of its divisors is an integer number (20550368667168).

Almost surely, 2^{61651106001501} is an apocalyptic number.

It is an amenable number.

61651106001501 is a deficient number, since it is larger than the sum of its proper divisors (20550368667171).

61651106001501 is a wasteful number, since it uses less digits than its factorization.

61651106001501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20550368667170.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 61651106001501 in words is "sixty-one trillion, six hundred fifty-one billion, one hundred six million, one thousand, five hundred one".