1626061874865 has 32 divisors (see below), whose sum is σ = 2604055658880. Its totient is φ = 866447801856.

The previous prime is 1626061874863. The next prime is 1626061874881. The reversal of 1626061874865 is 5684781606261.

It is a happy number.

It is not a de Polignac number, because 1626061874865 - 2¹ = 1626061874863 is a prime.

It is a super-4 number, since 4×1626061874865⁴ (a number of 50 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1626061874799 and 1626061874808.

It is not an unprimeable number, because it can be changed into a prime (1626061874861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97401459 + ... + 97418151.

It is an arithmetic number, because the mean of its divisors is an integer number (81376739340).

Almost surely, 2^{1626061874865} is an apocalyptic number.

1626061874865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1626061874865 is a deficient number, since it is larger than the sum of its proper divisors (977993784015).

1626061874865 is a wasteful number, since it uses less digits than its factorization.

1626061874865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22193.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 1626061874865 in words is "one trillion, six hundred twenty-six billion, sixty-one million, eight hundred seventy-four thousand, eight hundred sixty-five".