1572154122081 has 64 divisors (see below), whose sum is σ = 2219110502400. Its totient is φ = 988093016064.

The previous prime is 1572154122079. The next prime is 1572154122089. The reversal of 1572154122081 is 1802214512751.

It is not a de Polignac number, because 1572154122081 - 2¹ = 1572154122079 is a prime.

It is a super-2 number, since 2×1572154122081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1572154122089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1399958586 + ... + 1399959708.

It is an arithmetic number, because the mean of its divisors is an integer number (34673601600).

Almost surely, 2^{1572154122081} is an apocalyptic number.

It is an amenable number.

1572154122081 is a deficient number, since it is larger than the sum of its proper divisors (646956380319).

1572154122081 is a wasteful number, since it uses less digits than its factorization.

1572154122081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 1572154122081 in words is "one trillion, five hundred seventy-two billion, one hundred fifty-four million, one hundred twenty-two thousand, eighty-one".