78002120471 has 8 divisors (see below), whose sum is σ = 85122034704. Its totient is φ = 70887008320.

The previous prime is 78002120453. The next prime is 78002120477. The reversal of 78002120471 is 17402120087.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78002120471 - 2⁶ = 78002120407 is a prime.

It is a super-3 number, since 3×78002120471³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78002120477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166510 + ... + 1231563.

It is an arithmetic number, because the mean of its divisors is an integer number (10640254338).

Almost surely, 2^78002120471 is an apocalyptic number.

78002120471 is a deficient number, since it is larger than the sum of its proper divisors (7119914233).

78002120471 is a wasteful number, since it uses less digits than its factorization.

78002120471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401041.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 78002120471 in words is "seventy-eight billion, two million, one hundred twenty thousand, four hundred seventy-one".