78572215071454 has 16 divisors (see below), whose sum is σ = 126949768090992. Its totient is φ = 36256836215808.

The previous prime is 78572215071421. The next prime is 78572215071491. The reversal of 78572215071454 is 45417051227587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302494684 + ... + 302754319.

It is an arithmetic number, because the mean of its divisors is an integer number (7934360505687).

Almost surely, 2^{78572215071454} is an apocalyptic number.

78572215071454 is a deficient number, since it is larger than the sum of its proper divisors (48377553019538).

78572215071454 is a wasteful number, since it uses less digits than its factorization.

78572215071454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605254011.

The product of its (nonzero) digits is 21952000, while the sum is 58.

The spelling of 78572215071454 in words is "seventy-eight trillion, five hundred seventy-two billion, two hundred fifteen million, seventy-one thousand, four hundred fifty-four".