51151100100555 has 32 divisors (see below), whose sum is σ = 100728320200704. Its totient is φ = 21584640041856.

The previous prime is 51151100100431. The next prime is 51151100100563. The reversal of 51151100100555 is 55500100115115.

It is a happy number.

It is not a de Polignac number, because 51151100100555 - 2¹¹ = 51151100098507 is a prime.

It is a super-2 number, since 2×51151100100555² (a number of 28 digits) contains 22 as substring.

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, 18736665339 + ... + 18736668068.

It is an arithmetic number, because the mean of its divisors is an integer number (3147760006272).

Almost surely, 2^{51151100100555} is an apocalyptic number.

51151100100555 is a deficient number, since it is larger than the sum of its proper divisors (49577220100149).

51151100100555 is a wasteful number, since it uses less digits than its factorization.

51151100100555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37473333435.

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 51151100100555 in words is "fifty-one trillion, one hundred fifty-one billion, one hundred million, one hundred thousand, five hundred fifty-five".