1871660315102 has 32 divisors (see below), whose sum is σ = 2849817485088. Its totient is φ = 921814788096.

The previous prime is 1871660315101. The next prime is 1871660315177. The reversal of 1871660315102 is 2015130661781.

It is a super-2 number, since 2×1871660315102² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1871660315102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871660315101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239430698 + ... + 239438514.

It is an arithmetic number, because the mean of its divisors is an integer number (89056796409).

Almost surely, 2^{1871660315102} is an apocalyptic number.

1871660315102 is a deficient number, since it is larger than the sum of its proper divisors (978157169986).

1871660315102 is a wasteful number, since it uses less digits than its factorization.

1871660315102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580.

The product of its (nonzero) digits is 60480, while the sum is 41.

Adding to 1871660315102 its reverse (2015130661781), we get a palindrome (3886790976883).

The spelling of 1871660315102 in words is "one trillion, eight hundred seventy-one billion, six hundred sixty million, three hundred fifteen thousand, one hundred two".