2151620261512 has 48 divisors (see below), whose sum is σ = 4294938221460. Its totient is φ = 1010311090176.

The previous prime is 2151620261503. The next prime is 2151620261513.

2151620261512 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 2129480607076 + 22139654436 = 1459274^2 + 148794^2 .

It is a super-2 number, since 2×2151620261512² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (2151620261513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38388 + ... + 2074780.

Almost surely, 2^{2151620261512} is an apocalyptic number.

It is an amenable number.

2151620261512 is a deficient number, since it is larger than the sum of its proper divisors (2143317959948).

2151620261512 is a wasteful number, since it uses less digits than its factorization.

2151620261512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036890 (or 2036869 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 2151620261512 in words is "two trillion, one hundred fifty-one billion, six hundred twenty million, two hundred sixty-one thousand, five hundred twelve".